4 p.m., Beth Am Synagogue, 2501 Eutaw Place, (410) 225-7547, bethambaltimore.org, free.
It’s not often we’ll tell you to go see a college a cappella group, because we love you. But this is a special case. Yale’s a cappella singers Shades of Yale perform wide-ranging musical styles drawn from the oral tradition of African-Americans, from R&B to pop, hip-hop, gospel, soul, jazz, and funk. Basically, the greatest music in American history.